Leptogenesis in the exceptional supersymmetric standard model: flavour dependent lepton asymmetries
King, S.F, Luo, R, Miller, D.J. and Nevzorov, R. (2008) Leptogenesis in the exceptional supersymmetric standard model: flavour dependent lepton asymmetries. Journal of High Energy Physics, 2008, (12), 042. (doi:10.1088/1126-6708/2008/12/042).
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We calculate flavour dependent lepton asymmetries within the E6 inspired Supersymmetric Standard Model (E6SSM), which has an extra U(1)N symmetry. In this model, the right-handed neutrino doesn't participate in gauge interactions, allowing it to be used for both the see-saw mechanism and leptogenesis. Extra Higgs, leptons and leptoquarks predicted by the E6SSM contribute to the ordinary lepton CP asymmetries induced by the decays of the lightest right-handed neutrino (and sneutrino) and give rise to a set of extra decay asymmetries. We find that the CP asymmetries can be relatively large, even when the lightest right-handed neutrino is as light as 106 GeV.
|Subjects:||Q Science > QC Physics|
|Divisions:||University Structure - Pre August 2011 > School of Physics and Astronomy > Southampton High Energy Physics
|Date Deposited:||26 Apr 2011 13:09|
|Last Modified:||01 Jun 2011 07:57|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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